[Solved] Identify the error in this Deployment YAML snippet:apiVersion: apps/v1 kind: Deployment metadata: name: myapp spec: replicas: 2 selector: matchLabels: app: myapp template: metadata: labels: app:... | Kubernetes

Kubernetes - ReplicaSets and Deployments

Identify the error in this Deployment YAML snippet:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: myapp
spec:
  replicas: 2
  selector:
    matchLabels:
      app: myapp
  template:
    metadata:
      labels:
        app: myapp
    spec:
      container:
      - name: myapp-container
        image: myapp:1.0

AThe metadata.name is missing namespace.

BThe image tag '1.0' is invalid.

CThe selector is missing 'matchExpressions'.

DThe key 'container' should be 'containers' (plural).

Step-by-Step Solution

Solution:

Step 1: Check container spec syntax
The pod spec requires a containers list, not container.
Step 2: Validate other fields
The image tag '1.0' is valid, selector with matchLabels is correct, and namespace is optional (defaults to 'default').
Final Answer:
The key 'container' should be 'containers' (plural). -> Option D
Quick Check:
Pod spec uses containers (plural) list [OK]

Quick Trick: Use 'containers' plural key in pod spec [OK]

Common Mistakes:

Using singular 'container' instead of 'containers'
Assuming image tag format is always wrong
Thinking namespace is mandatory in metadata

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More Kubernetes Quizzes

Identify the error in this Deployment YAML snippet:

Step 1: Check container spec syntax

Step 2: Validate other fields

Final Answer:

Quick Check:

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